It is a Maxis bug that happens once in awhile with wages and promotions.
If your latest EP is AL (Apartment Life) and you use Inteen-AL, you will need to download a fix called petspo-jobfixes-inteen-al from Jordi's Files
here.
I beta tested that fix and found it to address the issue you described. Madcat didn't advertise that fix publicly, so it's not easy to find or know it now exist for Inteen-AL.
If you still have any odd issues with Inteen itself or its flavor packs, please direct your questions to the Inteen board at
Simbology.